File: rot.ll

package info (click to toggle)
llvm-toolchain-14 1%3A14.0.6-12
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,496,180 kB
  • sloc: cpp: 5,593,972; ansic: 986,872; asm: 585,869; python: 184,223; objc: 72,530; lisp: 31,119; f90: 27,793; javascript: 9,780; pascal: 9,762; sh: 9,482; perl: 7,468; ml: 5,432; awk: 3,523; makefile: 2,538; xml: 953; cs: 573; fortran: 567
file content (58 lines) | stat: -rw-r--r-- 1,037 bytes parent folder | download | duplicates (9) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
 
; RUN: llc < %s -march=avr | FileCheck %s

; Bit rotation tests.

; CHECK-LABEL: rol8:
define i8 @rol8(i8 %val, i8 %amt) {
  ; CHECK:      andi r22, 7

  ; CHECK-NEXT: dec r22
  ; CHECK-NEXT: brmi .LBB0_2

; CHECK-NEXT: .LBB0_1:
  ; CHECK-NEXT: lsl r24
  ; CHECK-NEXT: adc r24, r1
  ; CHECK-NEXT: dec r22
  ; CHECK-NEXT: brpl .LBB0_1

; CHECK-NEXT: .LBB0_2:
  ; CHECK-NEXT: ret
  %mod = urem i8 %amt, 8

  %inv = sub i8 8, %mod
  %parta = shl i8 %val, %mod
  %partb = lshr i8 %val, %inv

  %rotl = or i8 %parta, %partb

  ret i8 %rotl
}


; CHECK-LABEL: ror8:
define i8 @ror8(i8 %val, i8 %amt) {
  ; CHECK:      andi r22, 7

  ; CHECK-NEXT: dec r22
  ; CHECK-NEXT: brmi .LBB1_2

; CHECK-NEXT: .LBB1_1:
  ; CHECK-NEXT: bst r24, 0
  ; CHECK-NEXT: ror r24
  ; CHECK-NEXT: bld r24, 7
  ; CHECK-NEXT: dec r22
  ; CHECK-NEXT: brpl .LBB1_1

; CHECK-NEXT: .LBB1_2:
  ; CHECK-NEXT: ret
  %mod = urem i8 %amt, 8

  %inv = sub i8 8, %mod
  %parta = lshr i8 %val, %mod
  %partb = shl i8 %val, %inv

  %rotr = or i8 %parta, %partb

  ret i8 %rotr
}